Elsa went for a drive in her new car. She drove 345.6 miles at a speed of 54 miles per hour. For how many hours did she drive

The answer would be for 6.4 hours

Step-by-step explanation:

I started off this problem by writing down my key numbers for my equation. There is the total mileage, 345.6 miles, and the speed, which is 54 miles per hour. The formula I used was d/t=r (d = distance, t = time, r = rate (otherwise known as speed). I then plugged in the details I have into the equation and solved for the variable. (345.6 miles/t = 54 mph). For this problem, we are solving for the t. I then divided t from the left side, and multiplied it to the speed to get 345.6 = 54t. I then divided 345.6 by 54 to isolate the t variable and get our final answer, which is 6.4 hours.

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation:

1) the property is   ixi = a ⇔x = a   o x = -a

4(x-5)+3= 15⇒4x-20+3 = 15⇒4x-17= 15⇒4x = 15+17⇒4x = 32⇒x =32/4= 8

4(x-5) +3= -15⇒4x-20 +3 = -15⇒4x-17= -15⇒4x =-15+17⇒4x = 2⇒x =2/4= 1/2

the values are x =8 and x = 0,5